Auth bypass in Dronecode Px4 Drone Autopilot
CVE-2026-26742
PX4 Autopilot versions 1.12.x through 1.15.x contain a protection mechanism failure in the "Re-arm Grace Period" logic. The system incorrectly applies the in-air emergency re-arm logic to ground scenarios. If a pilot switches to Manual mode and re-arms within 5 seconds (default configuration) of an automatic landing, the system bypasses all pre-flight safety checks, including the throttle threshold check. This allows for an immediate high-thrust takeoff if the throttle stick is raised, leading to loss of control.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (19.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 19.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
Weakness classification (CWE)
References
- github.com/npuwyw/PX4-Autopilot/blob/audit-v1.12.3-mode-transition-logic-flaw/P… (Exploit, Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-26742?
- CVE-2026-26742 is a high-severity vulnerability in Dronecode Px4 Drone Autopilot, classified under Missing Authorization. CVSS score: 8.1/10. Published 2026-03-10.
- How severe is CVE-2026-26742?
- High severity. CVSS v3 base score is 8.1 out of 10.